/*
 * Copyright (c) 2008, 2021, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 *
 *
 *
 *
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 *
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 *
 *
 *
 *
 */

package sun.nio.cs;

import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;

import sun.nio.cs.StandardCharsets;
import sun.nio.cs.SingleByte;
import sun.nio.cs.HistoricallyNamedCharset;

import static sun.nio.cs.CharsetMapping.*;

public class IBM850 extends Charset implements HistoricallyNamedCharset {
    public IBM850() {
        super("IBM850", StandardCharsets.aliases_IBM850());
    }

    public String historicalName() {
        return "Cp850";
    }

    public boolean contains(Charset cs) {
        return (cs instanceof IBM850);
    }

    public CharsetDecoder newDecoder() {
        return new SingleByte.Decoder(this, Holder.b2c, false, false);
    }

    public CharsetEncoder newEncoder() {
        return new SingleByte.Encoder(this, Holder.c2b, Holder.c2bIndex, false);
    }

    private static class Holder {
        private static final String b2cTable =
                "\u00C7\u00FC\u00E9\u00E2\u00E4\u00E0\u00E5\u00E7" +      // 0x80 - 0x87
                        "\u00EA\u00EB\u00E8\u00EF\u00EE\u00EC\u00C4\u00C5" +      // 0x88 - 0x8f
                        "\u00C9\u00E6\u00C6\u00F4\u00F6\u00F2\u00FB\u00F9" +      // 0x90 - 0x97
                        "\u00FF\u00D6\u00DC\u00F8\u00A3\u00D8\u00D7\u0192" +      // 0x98 - 0x9f
                        "\u00E1\u00ED\u00F3\u00FA\u00F1\u00D1\u00AA\u00BA" +      // 0xa0 - 0xa7
                        "\u00BF\u00AE\u00AC\u00BD\u00BC\u00A1\u00AB\u00BB" +      // 0xa8 - 0xaf
                        "\u2591\u2592\u2593\u2502\u2524\u00C1\u00C2\u00C0" +      // 0xb0 - 0xb7
                        "\u00A9\u2563\u2551\u2557\u255D\u00A2\u00A5\u2510" +      // 0xb8 - 0xbf
                        "\u2514\u2534\u252C\u251C\u2500\u253C\u00E3\u00C3" +      // 0xc0 - 0xc7
                        "\u255A\u2554\u2569\u2566\u2560\u2550\u256C\u00A4" +      // 0xc8 - 0xcf
                        "\u00F0\u00D0\u00CA\u00CB\u00C8\u0131\u00CD\u00CE" +      // 0xd0 - 0xd7
                        "\u00CF\u2518\u250C\u2588\u2584\u00A6\u00CC\u2580" +      // 0xd8 - 0xdf
                        "\u00D3\u00DF\u00D4\u00D2\u00F5\u00D5\u00B5\u00FE" +      // 0xe0 - 0xe7
                        "\u00DE\u00DA\u00DB\u00D9\u00FD\u00DD\u00AF\u00B4" +      // 0xe8 - 0xef
                        "\u00AD\u00B1\u2017\u00BE\u00B6\u00A7\u00F7\u00B8" +      // 0xf0 - 0xf7
                        "\u00B0\u00A8\u00B7\u00B9\u00B3\u00B2\u25A0\u00A0" +      // 0xf8 - 0xff
                        "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007" +      // 0x00 - 0x07
                        "\b\t\n\u000B\f\r\u000E\u000F" +      // 0x08 - 0x0f
                        "\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017" +      // 0x10 - 0x17
                        "\u0018\u0019\u001A\u001B\u001C\u001D\u001E\u001F" +      // 0x18 - 0x1f
                        "\u0020\u0021\"\u0023\u0024\u0025\u0026\'" +      // 0x20 - 0x27
                        "\u0028\u0029\u002A\u002B\u002C\u002D\u002E\u002F" +      // 0x28 - 0x2f
                        "\u0030\u0031\u0032\u0033\u0034\u0035\u0036\u0037" +      // 0x30 - 0x37
                        "\u0038\u0039\u003A\u003B\u003C\u003D\u003E\u003F" +      // 0x38 - 0x3f
                        "\u0040\u0041\u0042\u0043\u0044\u0045\u0046\u0047" +      // 0x40 - 0x47
                        "\u0048\u0049\u004A\u004B\u004C\u004D\u004E\u004F" +      // 0x48 - 0x4f
                        "\u0050\u0051\u0052\u0053\u0054\u0055\u0056\u0057" +      // 0x50 - 0x57
                        "\u0058\u0059\u005A\u005B\\\u005D\u005E\u005F" +      // 0x58 - 0x5f
                        "\u0060\u0061\u0062\u0063\u0064\u0065\u0066\u0067" +      // 0x60 - 0x67
                        "\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F" +      // 0x68 - 0x6f
                        "\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077" +      // 0x70 - 0x77
                        "\u0078\u0079\u007A\u007B\u007C\u007D\u007E\u007F";      // 0x78 - 0x7f


        private static final char[] b2c = b2cTable.toCharArray();
        private static final char[] c2b = new char[0x400];
        private static final char[] c2bIndex = new char[0x100];

        static {
            char[] b2cMap = b2c;
            char[] c2bNR = null;
            SingleByte.initC2B(b2cMap, c2bNR, c2b, c2bIndex);
        }
    }
}
